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OBJECTIVEIntroduction: The study increase in the incidence of non-alcoholic steatohepatitis (NASH) on the background of obesity and chronic kidney disease (CKD) in people of working age in Ukraine and in the world necessitates the research into mechanisms of mutual burden and the search for new factors in the pathogenesis of this comorbidity progression . The aim: To establish the role of endothelial dysfunction in the mechanisms of mutual burden and progression of non-alcoholic steatohepatitis and chronic kidney disease in patients with obesity.PATIENTS AND METHODSMaterials and methods: 135 patients were examined: of which 52 patients with non-alcoholic steatohepatitis with obesity I degree (1 group), 53 patients with nonalcoholic steatohepatitis with comorbid obesity of the I degree and chronic kidney disease of the І-ІІ stage (group 2). The control group consisted of 30 practically healthy persons of the corresponding age and sex. The average age of patients was (45.8 ± 3.81) years.RESULTSResults: The results of the study showed that in patients with NASH, a significant increase in the content of NO in the blood was detected in comparison with the index in PHP (p <0,05) in group 1 - in 2,1 times, in the 2nd group - in 2,6 times (p <0,05). The role of nitrosative stress in the pathogenesis of NASH was proved, the confirmation of which is the increase in the concentration of nitrosothiols, peroxynitrite and other metabolites NO in the blood. Increased peroxynitrite formation due to the generation of NO by leukocytes is an important aspect of the damaging effect and inflammation process in NASH. Pathological hyperproduction of NO by endothelial cells and leukocytes from inflammatory infiltrates in the liver contributes to the development of nitrosative stress in NASH. The established hypernitrate in blood may also be considered compensatory in response to hyperproduction of ET-1 in all observational groups.CONCLUSIONConclusions: Confirmation of the presence of endothelial dysfunction (ED) in patients with NASH with CKD resulted in a probable growth of the number of desquamated endothelial cells (DEC) in the 2nd group of patients in 1.9 times (p2 <0.05). Generation by neutrophils during the exacerbation of NASH of a significant number of active forms of oxygen and nitrogen and hyperproduction of endothelial cells and endometrial lymphocytes with progressive damage to the endothelium (growth of DEC) leads to significant ED, accompanied by mosaic angiospasm of the arteries due to hyperproduction of ET-1 and parectic vasodilatation of the veins of the portal vein system because of the hyperproduction of NO.

THE ROLE OF ENDOTHELIAL DYSFUNCTION IN THE PROGRESSION MECHANISMS OF NON-ALCOHOLIC STEATOHEPATITIS IN PATIENTS WITH OBESITY AND CHRONIC KIDNEY DISEASE